Developed With Arduino Due

Introduction

This article provides a brief introduction to the Arduino Due boards. We start with the hardware and finish with an explanation of the entire procedure for the development and testing of a simple sketch. We will see the following in the order:

Hardware features Arduino Due is based on an AT91SAM3X8E processor, Cortex-ME CPU, and is the first card of this family-based 32-bit ARM microcontroller. At the hardware level, it has less than 54 pins for I / O, data transmission and reception, analog inputs, and much more. The following is the pin mapping and other hardware components:

Here is a preview of the Arduino Due. Besides the fact that Arduino Due is based on a 32bit ARM, there are still differences with other boards. Its running requires an operating voltage of 3.3V instead of 5, so avoid voltages higher than the nominal, since there is the risk of damaging the entire board. We have said previously, that it has two mini USB ports:

And also compatible with all Arduino shields and components used on the Arduino Uno, provided that the Pin-out is the same, a practical example is that we can connect the Ethernet shield used on the Arduino Uno since the pin-out is perfectly compatible as shown in the figure. For more details on the hardware, see the following link, where you can find more information and details about it. Installing libraries needed for development Now that we know the main hardware features, it is time to move to the development. This, however, involves certain procedures to be performed. First, download and install the Arduino IDE when the latest version is 1.6.4. After installation, if you try to start the Arduino IDE, we realize that one of the available boards is not on the Board section the opportunity to select Arduino Due. Why all this? We simply must download and install all the necessary libraries. Let's start, first we start the IDE development in the tools menu. Choose the Tools command and Boards as shown. We will be conducted on the Boards Manager screen, where you can download libraries for Arduino Due and the others since we have libraries for the family of Intel boards for example. We are interested in knowing how to download the libraries under the heading Arduino SAM Boards (32-bit ARM Cortex-M3), select it. Before you download we still need to select the version of the IDE, we select the latest version installed. We will begin the installation process, you will download the tools needed and more files of the definitions of the boards, as shown in the following images. After downloading all the necessary files, start the installation process of the boards and tools. After installation, if everything goes well, we will show in the screen the Boards Manager the word "INSTALLED" as shown.

We now have everything you need in the software development to start with the Arduino Due, however we still must do a few things before you start to program it.

Parameter settings After installation, we must now go to select as the default tab Arduino Due and still select the serial port to connect the board, otherwise we cannot transfer any content. Let's see how to proceed. We will start the Arduino IDE. In the Tools menu select Board again and unlike before, we can in the bottom of the menu item select the Arduino Due. We note that we have two choices that we're interested in and the first is the Arduino Due (the Programming Port), because as said earlier, we must not use the card as a peripheral or host, but rather we need to program it. After this activity, we still need to select the serial port, always from the Tools menu. Select this time the words Port and set the correct one, in my case COM4, but generally Arduino Due uses this serial port, as shown in the figure. Sample project Also, set the serial port, we are ready to create a sketch of the example, in reference to this article written previously, connect an Ethernet shield to the Arduino Due as shown earlier in this article, but then we connect the Port Programming Arduino Two at the USB port of our PC that will provide voltage to both boards. Now we upload the sketch of the code that you find in the article specified above, who will make the active Ethernet shield.